Corrected entry: Gail Weathers tells Kenny "I'll be right back" but survives the trilogy. We are specifically told that if a character uses this line he/she will be killed. It's a specific 'rule' of the genre.
Corrected entry: Right after curfew is in effect, when Tatum and Sydney are sitting on Sydney's front porch, you see the killer in the bushes in the background. The very next scene is of the video store where both killers, Stu and Billy, are speaking to Randy. The next scene that follows directly is Sydney and Tatum in the grocery store where you see the killer's reflection on the cooler glass. How can the killer(s) be in more than one place if this is all going on at the same time?
Corrected entry: At the school the killer knocks on Principle Himbry's door, he takes a moment to open it so of course the killer could have run, but the following time the killer knocks Himbry opens the door immediately, giving the killer no time to run and hide, but there's still no sign. Is he the Flash?
Corrected entry: In the space of 15 seconds (between the time Casey's mom hears her daughter on the phone and the time when she walks out her front door and sees Casey) how did the killer manage to tie Casey onto the swing? It would have taken quite a while to lift her body and twist the ropes around her tightly enough that they held. Stu couldn't have helped as he was with Tatum that night.
Corrected entry: When Sydney is attacked by Ghostface in the bathroom at school, Ghostface is wearing black pants and boots, but when Sydney, Billy, Stu, and Tatum are talking in front of the lockers seconds before Sydney goes into the bathroom Billy is wearing blue jeans and vans, and Stu is wearing tan pants and brown boots. How did either one of them change clothes that quickly?
Corrected entry: During the final scene in the house after Billy and Stu are revealed as the killers, Billy and Stu showed that they put a great deal of effort in planning the murders and the cover ups. But they seemed to forget their fingerprints. Their prints were on the cell phone and voice distorter they put in Mr. Prescott's coat pocket.
Corrected entry: (SPOILER)This may be an actual character mistake rather than a goof, but when Billy reveals that the "blood" on his shirt from when the killer "stabbed" him was actually corn syrup, he also has himself stabbed for real, to corroborate his story. But the problem is, it's the same shirt (as demonstrated when he licks some blood off of it and explains it was corn syrup.) So how would he have explained how corn syrup got onto his shirt while he was fighting off a killer?
Corrected entry: When Sidney is waiting for her friend, it's 7:15 and it's dark out. But later, all the stores are closing because of a 9:00 curfew, and it's light as day.
Corrected entry: Just after the curfew has been set, Tatum and Sidney go to the store, you can see a reflection of Ghostface but, surely the shopkeeper or anyone would notice a man walk in dressed head to toe like a serial killer with a ghost mask?
Corrected entry: During the showdown in the kitchen, Billy and Stu are stabbing each other in the side. Billy gets knife happy and starts stabbing Stu too much, but only in his side. Then when Billy tells Stu to get the gun, Stu turns around and and has a wound on his upper back with lots of blood, but there is no way that could have got there.
Corrected entry: When Randy answers the phone at the party and learns that Principal Himbry is dead, his face is very close to the top of the TV screen. However, when Gale and Kenny are watching the recording of the phone conversation in the van, Randy's mouth and nose are directly in front of the camera. The camera that Gale placed in the entertainment center when she first got to the party was situated on top of the VCR, which was in turn placed on a shelf below the actual TV; therefore, Randy's mouth and nose should not have been visible on the recording. If anything, only his waist should have been visible.
Corrected entry: When Sidney and Ghost face are fighting in her living room he knocks her down and is sitting on top of her. Ghost face grabs her by the hair and appears to headbutt her and pull her hair and slam the back of her head on the floor at the same time. She then puts her hand on her forehead.
Corrected entry: In the scene where Sydney gets to school and is talking to Gail, the clip that she wears in the back of her hair is silver, but in the next scene when she is at her locker with Tatum and Stu, the clip is brown.
Corrected entry: In the beginning of the movie when Casey and the killer are on the phone, she locks the front door and says "I am two seconds away from calling the police." If you look at the door while she is locking it, you will see that there are three glass windows at the top. When the killer rings the doorbell, it shows the door and it now has nine glass windows. (00:04:00)
Corrected entry: When Randy is explaining the "rules" and he is standing beside the television the batteries fall out of the remote yet he still manages to change the TV over.
Corrected entry: When Sidney and Kenny are watching the tape of the van from inside the party, the scene they are watching, and what actually took place of Randy describing the "rules", there are many differences in what the people say and do.